error: you don't need to add `&` to both the expression and the patterns
  --> $DIR/ice-2636.rs:12:9
   |
LL | /         match $foo {
LL | |             $ ( & $t => $ord,
LL | |             )*
LL | |         };
   | |_________^
...
LL |       test_hash!(&a, A => 0, B => 1, C => 2);
   |       --------------------------------------- in this macro invocation
   |
   = note: `-D clippy::match-ref-pats` implied by `-D warnings`
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to previous error